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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
11.9k
Companies
569
Updated
10.02.2026
11.9k Questions 569 Companies10.02.2026

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>Build a 30-day plan from PracHub's Meta SWE questions.

Two weeks of coding, then system design, then mock rounds. Start day 1?

PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

Showing 20 results
Roblox logo
Roblox
Medium
Frontend Engineer

Design a Notification UI with History and Live Updates

Design a user-facing notification system that loads existing read and unread notifications when a page opens and receives new notifications in real ti...

System DesignState ManagementAPI Design
1
0
30 people solved
Sep 15, 2026
Plaid logo
Plaid
Medium
Software Engineer Locked

Validate and Resolve Chained Decision Rules

Validate a table of named rules whose results may reference other rules, then determine whether every rule resolves without missing references or cycl...

Coding & AlgorithmsGraphs
46
0
404 people solved
Aug 4, 2026
Amazon logo
Amazon
Hard
Software Engineer AI

Circular Drone Hub Delivery Route

A drone delivery network is laid out as a ring of n hubs, numbered 0, 1, ..., n - 1. Each hub is connected by a direct air corridor to its two neighbo...

Coding & AlgorithmsArrays & Strings
51
0
581 people solved
Jun 28, 2026
Mercor logo
Mercor
Hard
Software Engineer

Review an Asynchronous Cache for Races, Memory Growth, and Thread Safety

Review this JavaScript cache sketch. Identify its immediate defects, explain the concurrency problem around an asynchronous load, and describe how you...

Software Engineering FundamentalsConcurrencyCaching
10
0
70 people solved
Sep 3, 2026
Fireworks logo
Fireworks
Medium
Machine Learning Engineer

Recommend Connections Through Mutual Friends and Evaluate the Ranking

A social network is represented by users and undirected friendship edges. Design a recommendation approach that suggests other users to connect with b...

ML System DesignRecommendation SystemsGraphs
6
1
86 people solved
Sep 11, 2026
Squarepoint logo
Squarepoint
Medium
Data Scientist

Explain Linear Regression Assumptions, Evaluation, and Feature Addition

Explain the problem solved by linear regression, how the model is fit, which assumptions matter, and how you would evaluate its quality. Then explain ...

Machine LearningRegression & Statistical Modeling
5
0
38 people solved
Sep 9, 2026
Salesforce logo
Salesforce
Medium
Software EngineerSenior+

Fewest Repeat-Free Pieces After Deleting Every Copy of One Letter

You are given a string s of lowercase English letters. You must perform the following operation exactly once: - Choose one lowercase English letter an...

Coding & AlgorithmsGreedy
3
0
27 people solved
Sep 22, 2026
Capital One logo
Capital One
Medium
Software Engineer

In-Memory Banking System: Deposits, Transfers, Top-N Activity, Test Harness

Implement an in-memory banking system as a class. The interviewer builds it up in three steps, then tests it by feeding in lists of string arrays, one...

Software Engineering FundamentalsData Structure Design
2
0
15 people solved
Sep 22, 2026
Waymo logo
Waymo
Medium
Software Engineer

Insert +, -, * and Parentheses Between Ordered Numbers to Reach a Target

You are given a list of integers nums and an integer target. Keeping the numbers in their given order, you may insert one of the operators +, - or * b...

Coding & AlgorithmsBacktracking & Recursion
4
0
50 people solved
Sep 10, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Reason About Binary Search with One-Call-Delayed Feedback

Analyze binary search when each comparison response belongs to the previous guess rather than the current call. The exercise focuses on startup and fl...

Software Engineering Fundamentals
28
0
257 people solved
Aug 18, 2026
Whatnot logo
Whatnot
Medium
Software Engineer

Visit Every Listed Attraction Using Each Trail at Most Once

A map has n attractions, numbered 0 to n - 1, joined by two-way trails. trails[i] = [u, v] is a trail between attractions u and v, and several trails ...

Coding & AlgorithmsGraphs
1
0
14 people solved
Sep 22, 2026
Anthropic logo
Anthropic
Hard
Performance / Infrastructure Software EngineerSenior+

Compute Exact Mode and Median Across Distributed Nodes

Compute Exact Mode and Median Across Distributed Nodes Ten worker nodes collectively hold 1,000 numeric elements. The elements are partitioned across ...

Software Engineering Fundamentals
8
0
126 people solved
Aug 24, 2026
OpenAI logo
OpenAI
Medium
Machine Learning Engineer

Model Infection, Immunity, Delayed Death, and Burn Interventions on a Grid

Design and reason about a grid-based plant-infection simulation that grows through five stages: infection spread, immune cells, expiring immunity, del...

Software Engineering FundamentalsSimulation & State Machines
5
0
68 people solved
Aug 27, 2026
Atlassian logo
Atlassian
Medium
Frontend EngineerSenior+

Front-End Design of an Emoji Picker with a Search Field

Design the front end of an emoji picker: the familiar panel that opens from a message box or a reaction button, shows emoji grouped by category in a s...

System DesignUI Components & Accessibility
3
0
39 people solved
Sep 12, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Find the Minimum Bus Fleet with Station Constraints

A bus schedule specifies the departure time, arrival time, departure station, and arrival station of every trip. Find the minimum number of buses that...

Coding & AlgorithmsIntervals & Scheduling
4
0
61 people solved
Sep 5, 2026
Amazon logo
Amazon
Medium
Software Engineer

Search a Folder Hierarchy with Extensible Document Filters

Implement an extensible search over a hierarchy of folders and documents. Initially find documents above a size threshold; then add document-type filt...

Coding & AlgorithmsTreesCode Quality & Maintainability
3
1
37 people solved
Sep 14, 2026
OpenAI logo
OpenAI
Hard
Software Engineer

Design a Payment System: Holds and Captures, Batch Charges, Reconciliation, Idempotency

Design a payment system for a company that charges its customers for usage, for example a platform that bills for API or subscription usage through ex...

System DesignPayments & LedgersDistributed Transactions & Idempotency
1
0
23 people solved
Sep 20, 2026
OpenAI logo
OpenAI
Hard
Software Engineer Locked

Design Alternating Card Dealing and Hand Comparison

Design alternating card dealing, supplied-rule hand comparison, and event logging while keeping unspecified card, ranking, and tie semantics explicit.

Software Engineering Fundamentals
21
0
341 people solved
Aug 23, 2026
Microsoft logo
Microsoft
Medium
Software EngineerSenior+

Find Unique Zero-Sum Triplets

Given an integer array, return every distinct triplet of values whose sum is zero. Each triplet must use three different array indices. Return duplica...

Coding & AlgorithmsTwo Pointers & Sliding Window
2
0
44 people solved
Sep 10, 2026
Waymo logo
Waymo
Medium
Data Scientist

SQL: Users With No Rides in the Most Recent 7-Day Window, Including Non-Riders

A ride service stores its users and their rides in two tables. Find the inactive users: users who took no ride during the most recent 7-day window. Us...

Data Manipulation (SQL/Python)SQL
4
0
46 people solved
Sep 10, 2026
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